app_chanisavail.c File Reference
Check if Channel is Available. More...
#include "asterisk.h"#include <sys/ioctl.h>#include "asterisk/lock.h"#include "asterisk/file.h"#include "asterisk/channel.h"#include "asterisk/pbx.h"#include "asterisk/module.h"#include "asterisk/app.h"#include "asterisk/devicestate.h"
Include dependency graph for app_chanisavail.c:
Go to the source code of this file.
Functions | |
| static void | __reg_module (void) |
| static void | __unreg_module (void) |
| static int | chanavail_exec (struct ast_channel *chan, const char *data) |
| static int | load_module (void) |
| static int | unload_module (void) |
Variables | |
| static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Check channel availability" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } |
| static const char | app [] = "ChanIsAvail" |
| static struct ast_module_info * | ast_module_info = &__mod_info |
Detailed Description
Check if Channel is Available.
Definition in file app_chanisavail.c.
Function Documentation
| static void __reg_module | ( | void | ) | [static] |
Definition at line 214 of file app_chanisavail.c.
| static void __unreg_module | ( | void | ) | [static] |
Definition at line 214 of file app_chanisavail.c.
| static int chanavail_exec | ( | struct ast_channel * | chan, |
| const char * | data | ||
| ) | [static] |
Definition at line 102 of file app_chanisavail.c.
References args, AST_APP_ARG, ast_channel_name(), ast_channel_nativeformats(), AST_DECLARE_APP_ARGS, AST_DEVICE_UNKNOWN, ast_hangup(), ast_log(), ast_parse_device_state(), ast_request(), AST_STANDARD_APP_ARGS, ast_str_alloca, ast_str_append(), ast_str_buffer(), ast_str_strlen(), ast_strlen_zero(), LOG_WARNING, pbx_builtin_setvar_helper(), peers, and status.
Referenced by load_module().
{
int inuse=-1, option_state=0, string_compare=0, option_all_avail=0;
int status;
char *info, tmp[512], trychan[512], *peers, *tech, *number, *rest, *cur;
struct ast_str *tmp_availchan = ast_str_alloca(2048);
struct ast_str *tmp_availorig = ast_str_alloca(2048);
struct ast_str *tmp_availstat = ast_str_alloca(2048);
struct ast_str *tmp_availcause = ast_str_alloca(2048);
struct ast_channel *tempchan;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(reqchans);
AST_APP_ARG(options);
);
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "ChanIsAvail requires an argument (DAHDI/1&DAHDI/2)\n");
return -1;
}
info = ast_strdupa(data);
AST_STANDARD_APP_ARGS(args, info);
if (args.options) {
if (strchr(args.options, 'a')) {
option_all_avail = 1;
}
if (strchr(args.options, 's')) {
option_state = 1;
}
if (strchr(args.options, 't')) {
string_compare = 1;
}
}
peers = args.reqchans;
if (peers) {
cur = peers;
do {
/* remember where to start next time */
rest = strchr(cur, '&');
if (rest) {
*rest = 0;
rest++;
}
tech = cur;
number = strchr(tech, '/');
if (!number) {
ast_log(LOG_WARNING, "ChanIsAvail argument takes format ([technology]/[device])\n");
return -1;
}
*number = '\0';
number++;
status = AST_DEVICE_UNKNOWN;
if (string_compare) {
/* ast_parse_device_state checks for "SIP/1234" as a channel name.
ast_device_state will ask the SIP driver for the channel state. */
snprintf(trychan, sizeof(trychan), "%s/%s",cur,number);
status = inuse = ast_parse_device_state(trychan);
} else if (option_state) {
/* If the pbx says in use then don't bother trying further.
This is to permit testing if someone's on a call, even if the
channel can permit more calls (ie callwaiting, sip calls, etc). */
snprintf(trychan, sizeof(trychan), "%s/%s",cur,number);
status = inuse = ast_device_state(trychan);
}
snprintf(tmp, sizeof(tmp), "%d", status);
ast_str_append(&tmp_availstat, 0, "%s%s", ast_str_strlen(tmp_availstat) ? "&" : "", tmp);
if ((inuse <= 1) && (tempchan = ast_request(tech, ast_channel_nativeformats(chan), chan, number, &status))) {
ast_str_append(&tmp_availchan, 0, "%s%s", ast_str_strlen(tmp_availchan) ? "&" : "", ast_channel_name(tempchan));
snprintf(tmp, sizeof(tmp), "%s/%s", tech, number);
ast_str_append(&tmp_availorig, 0, "%s%s", ast_str_strlen(tmp_availorig) ? "&" : "", tmp);
snprintf(tmp, sizeof(tmp), "%d", status);
ast_str_append(&tmp_availcause, 0, "%s%s", ast_str_strlen(tmp_availcause) ? "&" : "", tmp);
ast_hangup(tempchan);
tempchan = NULL;
if (!option_all_avail) {
break;
}
}
cur = rest;
} while (cur);
}
pbx_builtin_setvar_helper(chan, "AVAILCHAN", ast_str_buffer(tmp_availchan));
/* Store the originally used channel too */
pbx_builtin_setvar_helper(chan, "AVAILORIGCHAN", ast_str_buffer(tmp_availorig));
pbx_builtin_setvar_helper(chan, "AVAILSTATUS", ast_str_buffer(tmp_availstat));
pbx_builtin_setvar_helper(chan, "AVAILCAUSECODE", ast_str_buffer(tmp_availcause));
return 0;
}
| static int load_module | ( | void | ) | [static] |
Definition at line 208 of file app_chanisavail.c.
References AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_SUCCESS, ast_register_application_xml, and chanavail_exec().
| static int unload_module | ( | void | ) | [static] |
Definition at line 203 of file app_chanisavail.c.
References ast_unregister_application().
{
return ast_unregister_application(app);
}
Variable Documentation
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Check channel availability" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static] |
Definition at line 214 of file app_chanisavail.c.
const char app[] = "ChanIsAvail" [static] |
Definition at line 48 of file app_chanisavail.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 214 of file app_chanisavail.c.
